<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<title>Source code</title>
<link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style">
</head>
<body>
<div class="sourceContainer">
<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: SpringXMLKVDatabase.html 602 2015-01-05 18:49:18Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.spring;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.io.File;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.io.IOException;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.io.InputStream;<a name="line.12"></a>
<span class="sourceLineNo">013</span><a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.dellroad.stuff.io.StreamRepository;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.jsimpledb.kv.simple.XMLKVDatabase;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.springframework.core.io.FileSystemResource;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import org.springframework.core.io.Resource;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>/**<a name="line.19"></a>
<span class="sourceLineNo">020</span> * {@link XMLKVDatabase} that adds support for loading the default initial content from any Spring {@link Resource}.<a name="line.20"></a>
<span class="sourceLineNo">021</span> * For example, this allows initial content to be loaded from the classpath.<a name="line.21"></a>
<span class="sourceLineNo">022</span> *<a name="line.22"></a>
<span class="sourceLineNo">023</span> * @see XMLKVDatabase<a name="line.23"></a>
<span class="sourceLineNo">024</span> */<a name="line.24"></a>
<span class="sourceLineNo">025</span>public class SpringXMLKVDatabase extends XMLKVDatabase {<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>    private Resource initialContentResource;<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>// Constructors<a name="line.29"></a>
<span class="sourceLineNo">030</span><a name="line.30"></a>
<span class="sourceLineNo">031</span>    /**<a name="line.31"></a>
<span class="sourceLineNo">032</span>     * Normal constructor. Uses a {@link org.dellroad.stuff.io.FileStreamRepository} backed by the specified file.<a name="line.32"></a>
<span class="sourceLineNo">033</span>     *<a name="line.33"></a>
<span class="sourceLineNo">034</span>     * @param file persistent XML file<a name="line.34"></a>
<span class="sourceLineNo">035</span>     * @throws IllegalArgumentException if {@code file} is null<a name="line.35"></a>
<span class="sourceLineNo">036</span>     */<a name="line.36"></a>
<span class="sourceLineNo">037</span>    public SpringXMLKVDatabase(File file) {<a name="line.37"></a>
<span class="sourceLineNo">038</span>        super(file);<a name="line.38"></a>
<span class="sourceLineNo">039</span>    }<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span>    /**<a name="line.41"></a>
<span class="sourceLineNo">042</span>     * Constructor allowing storage in any user-supplied {@link StreamRepository}.<a name="line.42"></a>
<span class="sourceLineNo">043</span>     *<a name="line.43"></a>
<span class="sourceLineNo">044</span>     * @param repository XML file storage<a name="line.44"></a>
<span class="sourceLineNo">045</span>     * @throws IllegalArgumentException if {@code file} is null<a name="line.45"></a>
<span class="sourceLineNo">046</span>     */<a name="line.46"></a>
<span class="sourceLineNo">047</span>    public SpringXMLKVDatabase(StreamRepository repository) {<a name="line.47"></a>
<span class="sourceLineNo">048</span>        super(repository);<a name="line.48"></a>
<span class="sourceLineNo">049</span>    }<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>    /**<a name="line.51"></a>
<span class="sourceLineNo">052</span>     * Configure the {@link Resource} containing default initial content for an uninitialized database. This method is invoked<a name="line.52"></a>
<span class="sourceLineNo">053</span>     * by {@link #getInitialContent} when, on the first load, the backing XML file is not found.<a name="line.53"></a>
<span class="sourceLineNo">054</span>     *<a name="line.54"></a>
<span class="sourceLineNo">055</span>     * @param initialContentResource resource containing default initial XML database content, or null for none<a name="line.55"></a>
<span class="sourceLineNo">056</span>     */<a name="line.56"></a>
<span class="sourceLineNo">057</span>    public void setInitialContentResource(Resource initialContentResource) {<a name="line.57"></a>
<span class="sourceLineNo">058</span>        this.initialContentResource = initialContentResource;<a name="line.58"></a>
<span class="sourceLineNo">059</span>    }<a name="line.59"></a>
<span class="sourceLineNo">060</span><a name="line.60"></a>
<span class="sourceLineNo">061</span>    /**<a name="line.61"></a>
<span class="sourceLineNo">062</span>     * Configure the {@link Resource} containing default initial content for an uninitialized database from the specified file.<a name="line.62"></a>
<span class="sourceLineNo">063</span>     *<a name="line.63"></a>
<span class="sourceLineNo">064</span>     * @param initialContentFile file containing default initial XML database content, or null for none<a name="line.64"></a>
<span class="sourceLineNo">065</span>     */<a name="line.65"></a>
<span class="sourceLineNo">066</span>    @Override<a name="line.66"></a>
<span class="sourceLineNo">067</span>    public void setInitialContentFile(File initialContentFile) {<a name="line.67"></a>
<span class="sourceLineNo">068</span>        this.setInitialContentResource(initialContentFile != null ? new FileSystemResource(initialContentFile) : null);<a name="line.68"></a>
<span class="sourceLineNo">069</span>    }<a name="line.69"></a>
<span class="sourceLineNo">070</span><a name="line.70"></a>
<span class="sourceLineNo">071</span>    /**<a name="line.71"></a>
<span class="sourceLineNo">072</span>     * Get the initial content for an uninitialized database. This method is invoked when, on the first load,<a name="line.72"></a>
<span class="sourceLineNo">073</span>     * the backing XML file is not found. It should return a stream that reads initial content for the database,<a name="line.73"></a>
<span class="sourceLineNo">074</span>     * if any, otherwise null.<a name="line.74"></a>
<span class="sourceLineNo">075</span>     *<a name="line.75"></a>
<span class="sourceLineNo">076</span>     * &lt;p&gt;<a name="line.76"></a>
<span class="sourceLineNo">077</span>     * The implementation in {@link SpringXMLKVDatabase} returns an {@link InputStream} acquired from the {@link Resource}<a name="line.77"></a>
<span class="sourceLineNo">078</span>     * configured by {@link #setInitialContentResource setInitialContentResource()}, if any, otherwise null.<a name="line.78"></a>
<span class="sourceLineNo">079</span>     * &lt;/p&gt;<a name="line.79"></a>
<span class="sourceLineNo">080</span>     *<a name="line.80"></a>
<span class="sourceLineNo">081</span>     * @return default initial XML database content, or null for none<a name="line.81"></a>
<span class="sourceLineNo">082</span>     */<a name="line.82"></a>
<span class="sourceLineNo">083</span>    @Override<a name="line.83"></a>
<span class="sourceLineNo">084</span>    protected InputStream getInitialContent() throws IOException {<a name="line.84"></a>
<span class="sourceLineNo">085</span>        return this.initialContentResource != null ? this.initialContentResource.getInputStream() : null;<a name="line.85"></a>
<span class="sourceLineNo">086</span>    }<a name="line.86"></a>
<span class="sourceLineNo">087</span>}<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>




























































</pre>
</div>
</body>
</html>
